[Gord0]

The way you described spark blowout earlier, I've never heard described that way. That's always been detonation, or spark knock. Hope that's not what you're actually seeing.

 

[FanaticalKilla]

Should ask the 1000 hp guys what they are doing….

 

[boostkingMatt]

Should ask the 1000 hp guys what they are doing….

They don’t have this issue… and Jake said he gaps his plugs to .020 and Steven gaps his to 0.023

 

[boostkingMatt]

The way you described spark blowout earlier, I've never heard described that way. That's always been detonation, or spark knock. Hope that's not what you're actually seeing.

I know… I feel like it’s knock, because if it’s blowout I thought for sure I’d get misfire code.

 

[boostkingMatt]

Not much going on with the truck lately. Just driving it and having fun. Going to do a launch soon. I’m babying this truck more than my old one. But I do need to do a launch or two to test out everything.

Helped a ford tech buddy today modify his Explorer ST with the full lineup of CVF parts that I got him for free. Got to work in the big shop, and it was awesome!

 

[GearHead_1]

Looks like mine and I've been there.

 

[boostkingMatt]

Launched the truck today. Traction bars worked amazing. It had some spark issues mid pull during the 1/4 mile, like around the 1/8 mile I think, and then hit limp mode right before the 1/4 mile. Ran a 12.73 at 102
Probably would have been a 12.60 at 106 if it hadn’t gone to limp mode. Tune needs work though. Shifts weren’t great either.

 

[JasonMink]

What do you launch in 4hi or 4all?

 

[JasonMink]

Awesome,i run all CVF also,minus my Rouch CAI,i also want to convert my cat back to a dual CVF exhaust

 

[Jljones98]

Launched the truck today. Traction bars worked amazing. It had some spark issues mid pull during the 1/4 mile, like around the 1/8 mile I think, and then hit limp mode right before the 1/4 mile. Ran a 12.73 at 102
Probably would have been a 12.60 at 106 if it hadn’t gone to limp mode. Tune needs work though. Shifts weren’t great either. View attachment 204337

On ETune? If so E85 or Lower?

 

[Jljones98]

Still getting a lot of spark blowout… so I’m not sure what the deal is… I’m on oem plugs gapped to .024

Mines bad about spark blowout as well under full throttle. The Ruthenium’s gapped at .024 helped but not 100% all the time. I’m likely going to gap down to .022 or .020 this weekend.

 

[Jljones98]

Still getting a lot of spark blowout… so I’m not sure what the deal is… I’m on oem plugs gapped to .024

Mines bad about spark blowout as well under full throttle. The Ruthenium’s gapped at .024 helped but not 100% all the time. I’m likely going to gap down to .022 or .020 this weekend.

Just read back on thread a few pages and see that you’ve already tried this route. Following to see what ends up working for you.

 

[boostkingMatt]

On ETune? If so E85 or Lower?

91 octane

 

[boostkingMatt]

This broke my record. No popping sound, no limp mode. I had e20-e30 in the tank during this pull. Tune had not been adjusted since the last time I tried. I am not positive but that was either spark blowout I was hearing or knock. Either way, this proves that increasing octane makes the issue go away. What are y’all’s thoughts?

 

[Gord0]

If increasing octane made it go away it was knock.

 

[boostkingMatt]

If increasing octane made it go away it was knock.

Right. That’s what I’m thinking. So we need to lower boost probably on the 91 tune.

 

[Gord0]

Yeah, higher octane is more difficult to light. If it was spark blowing out then higher octane would make it worse. Sounds like lowering it would be helpful to your motors longevity.

 

[boostkingMatt]

Yeah, higher octane is more difficult to light. If it was spark blowing out then higher octane would make it worse. Sounds like lowering it would be helpful to your motors longevity.

Yeah I think we need to drop to 20 psi and see what that does

 

[Jljones98]

I’m 22-23 psi on 93 and occasionally have the same issue. So I believe 91 would definitely get that issue at similar psi

 

[FanaticalKilla]

Yeah, higher octane is more difficult to light. If it was spark blowing out then higher octane would make it worse. Sounds like lowering it would be helpful to your motors longevity.

Higher octane is less susceptible to pre ignition. Not necessarily harder to ignite. Less susceptible to igniting from a hot spot.